Essay questions

AIM: To practise writing an essay for exam exam revision
LEARNING OUTCOMES: Critical evaluation and self assessment

Do the following essays under exam conditions and then compare to the marking scheme. This will enable you to mark your own essay should provide good revision practise.

1 (i)Give a detailed description of positive and negative selection in the thymus. (50% of the marks)
(ii)How does the selection process affect the function of T lymphocytes? (50% of the marks)

2. Give a detailed account of how professional antigen presenting cells activate naive lymphocytes.

3. (i)Describe the heterogenous sub-populations of T lymphocytes (50% of marks)
(ii)Give a detailed account of the function and control of CD4+ Th1 and Th2 subpopulations (50% of marks)

4. (i)What are the main functions of natural killer cells (25% of marks)
(ii)Describe how they recognise and kill target cells (75% of marks)

To help with your revision - the marking schemes are available. Simply click here and save onto your disk.